LibGUI: Add deprecated suffix to {set_,}tooltip in Widget

Author: https://github.com/camc 🔰
Commit: d978dd4af8
Pull-request: https://github.com/SerenityOS/serenity/pull/20312
Reviewed-by: https://github.com/AtkinsSJ ✅

Userland/Libraries/LibGUI/LinkLabel.cpp

@@ -119,9 +119,9 @@ void LinkLabel::did_change_text()
 void LinkLabel::update_tooltip_if_needed()
 {
     if (width() < font().width(text())) {
-        set_tooltip(text().to_deprecated_string());
+        set_tooltip_deprecated(text().to_deprecated_string());
     } else {
-        set_tooltip({});
+        set_tooltip_deprecated({});
     }
 }